JP2024007686A - Polycarbonate resin composition and resin molded article containing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass fiber-reinforced polycarbonate-acrylonitrile-butadiene-styrene resin composition having excellent flexural strength, impact strength, heat resistance and thermal stability and to provide a resin molded article containing the resin composition.

SOLUTION: There is provided a fiber-reinforced polycarbonate resin composition which comprises 0.01 to 0.2 pt.mass of a phosphoric ester-based compound (D) based on 100 pts.mass of a composition composed of 20 to 89 mass% of a polycarbonate resin (A), 1 to 50 mass% of an acrylonitrile-butadiene-styrene resin (B) and 10 to 60 mass% of a glass fiber (C), wherein the unnotched Charpy impact strength at 23°C by a test method based on ISO 179 is 30 kJ/m² or more.

SELECTED DRAWING: None

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a glass fiber reinforced polycarbonate resin composition and a resin molded article containing the same.

Polycarbonate resin is a thermoplastic resin that is used as a general-purpose engineering plastic with excellent transparency, impact resistance, heat resistance, dimensional stability, etc. Due to its excellent properties, it is used in fields such as electrical, electronic, ITE, machinery, and automobiles. It is widely used in However, polycarbonate resin has the problem of high melt viscosity and poor moldability, and as molded products become thinner and larger, there is a strong need to improve moldability (fluidity). There is.

As a means to solve the above problems, many compositions have been proposed in which a polycarbonate resin is blended with a rubber-modified styrene resin. In order to improve the moldability of polycarbonate resin, a composition in which acrylonitrile-butadiene-styrene resin (ABS resin) is blended with polycarbonate resin is used as a polymer alloy in many molding fields due to its heat resistance and moldability. It's been getting worse. However, a problem with polymer alloys made of polycarbonate resin and ABS resin is that their rigidity and heat resistance are reduced.

In order to improve the rigidity and heat resistance of a polymer alloy made of polycarbonate resin and ABS resin, there is a method of adding glass fiber together with the polymer alloy. However, there is a problem in that the inclusion of glass fibers makes the composition itself brittle and the impact strength of the product is significantly reduced. Further, the effect of improving heat resistance by blending glass fiber is limited, and in order to develop high heat resistance, it is necessary to add glass fiber, other resins, inorganic fillers, etc.

Patent Document 1 discloses that a thermoplastic resin made of polycarbonate resin has good flame retardancy, strength, rigidity, and low anisotropy at the same time by using a plate-like inorganic filler containing glass fiber with a flat cross-sectional shape and an alkali metal organic sulfonate. However, there is no mention of impact strength or heat resistance.

JP2007-211157

The purpose of the present invention is to provide a glass fiber reinforced polycarbonate/acrylonitrile-butadiene-styrene resin composition that has excellent bending strength, impact strength, heat resistance, and thermal stability, and a resin molded article containing the resin composition. shall be.

As a result of intensive research in view of the above-mentioned problems, the present inventors have found that glass fiber and a phosphate ester compound are blended in optimal amounts into a resin component consisting of polycarbonate resin and acrylonitrile-butadiene-styrene resin. discovered that the bending strength, impact strength, heat resistance, and thermal stability of conventional glass fiber-reinforced polycarbonate/acrylonitrile-butadiene-styrene resin compositions were significantly increased without impairing the fluidity thereof, and the present invention was completed. reached.

That is, the present invention (1) provides a composition comprising 20 to 89% by mass of polycarbonate resin (A), 1 to 50% by mass of acrylonitrile-butadiene-styrene resin (B), and 10 to 60% by mass of glass fiber (C). Contains 0.01 to 0.2 parts by mass of the phosphoric acid ester compound (D) per 100 parts by mass, and has an unnotched Charpy impact strength of 30 kJ/m2 or ^more at 23°C using a test method based on ISO179. A fiber-reinforced polycarbonate resin composition and a resin molded article containing the same.

The present invention (2) is the fiber-reinforced polycarbonate resin composition according to the present invention (1), wherein the polycarbonate resin (A) has a viscosity average molecular weight of 16,000 to 30,000.

In the present invention (3), the glass fiber (C) is treated with an epoxy-based sizing agent or a urethane-based sizing agent, and has a flat cross section with an average value of the ratio of the major axis to the minor axis (major axis/minor axis) of 2 to 8. The fiber-reinforced polycarbonate resin composition according to the present invention (1) or (2).

In the present invention (4), the glass fiber (C) is treated with an epoxy-based sizing agent or a urethane-based sizing agent, and has a circular cross section with an average diameter of 6 to 20 μm. The fiber-reinforced polycarbonate resin composition described above.

（一般式（１）において、Ｒ^１は、それぞれ独立して、炭素数１～２０のアルキル基を示し、ａは、０～３の整数を示す）
一般式（２）：

（一般式（２）において、Ｒ^２、Ｒ^３、Ｒ^５及びＲ^６は、それぞれ独立して、水素原子、炭素数１～８のアルキル基、炭素数５～８のシクロアルキル基、炭素数６～１２のアルキルシクロアルキル基、炭素数７～１２のアラルキル基又はフェニル基を示す。Ｒ^４は、水素原子又は炭素数１～８のアルキル基を示す。Ｘは、単結合、硫黄原子又は式：－ＣＨＲ^７－（ここで、Ｒ^７は、水素原子、炭素数１～８のアルキル基又は炭素数５～８のシクロアルキル基を示す）で表される基を示す。Ａは、炭素数１～８のアルキレン基又は式：＊－ＣＯＲ^８－（ここで、Ｒ^８は、単結合又は炭素数１～８のアルキレン基を示し、＊は、酸素側の結合手であることを示す）で表される基を示す。Ｙ及びＺは、いずれか一方がヒドロキシル基、炭素数１～８のアルコキシ基又は炭素数７～１２のアラルキルオキシ基を示し、もう一方が水素原子又は炭素数１～８のアルキル基を示す。）
一般式（３）：

（一般式（３）において、Ｒ^９及びＲ^１０は、それぞれ独立して、炭素数１～２０のアルキル基又はアルキル基で置換されていてもよいアリール基を示し、ｂ及びｃは、それぞれ独立して、０～３の整数を示す。）
一般式（４）：

（一般式（４）において、Ｒ^１１は、それぞれ独立して、炭素数１～２０のアルキル基を示し、ｄは、それぞれ独立して、０～３の整数を示す） The present invention (5) provides that the phosphoric acid ester compound (D) is represented by the following general formula (1), the following general formula (2), the following general formula (3), and the following general formula (4). The fiber-reinforced polycarbonate resin composition according to any one of the present invention (1) to (4), which is one or more compounds selected from compounds.
General formula (1):

(In general formula (1), R ¹ each independently represents an alkyl group having 1 to 20 carbon atoms, and a represents an integer of 0 to 3)
General formula (2):

(In general formula (2), R ² , R ³ , R ⁵ and R ⁶ each independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, and a cycloalkyl group having 5 to 8 carbon atoms. It represents an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, or a phenyl group. R ⁴ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. X represents a single bond, a sulfur atom, or Formula: -CHR ⁷ - (where R ⁷ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms). A is a carbon Alkylene group of numbers 1 to 8 or formula: *-COR ⁸ - (where R ⁸ represents a single bond or an alkylene group having 1 to 8 carbon atoms, and * represents a bond on the oxygen side ).One of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms, or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or a carbon number (Indicates an alkyl group of 1 to 8.)
General formula (3):

(In general formula (3), R ⁹ and R ¹⁰ each independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group optionally substituted with an alkyl group, and b and c each independently (indicates an integer from 0 to 3.)
General formula (4):

(In general formula (4), R ¹¹ each independently represents an alkyl group having 1 to 20 carbon atoms, and d each independently represents an integer of 0 to 3)

The present invention (6) is the present invention (5), wherein the phosphite compound (C) represented by the general formula (1) is tris(2,4-di-t-butylphenyl)phosphite. The fiber-reinforced polycarbonate resin composition described in .

In the present invention (7), the phosphite compound (C) represented by the general formula (2) is 2,4,8,10-tetra-t-butyl-6-[3-(3- In the fiber-reinforced polycarbonate resin composition according to the present invention (5), which is methyl-4-hydroxy-5-t-butylphenyl)propoxy]dibenzo[d,f][1,3,2]dioxaphosphepine. be.

In the present invention (8), the phosphite compound (C) represented by the general formula (3) is 3,9-bis[2,4-bis(α,α-dimethylbenzyl)phenoxy]- 2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane) and 3,9-bis(2,6-di-tert-butyl-4-methylphenoxy)-2,4,8 , 10-tetraoxa-3,9-diphosphaspiro[5,5]undecane, the fiber-reinforced polycarbonate resin composition according to the present invention (5).

In the present invention (9), the phosphoric acid ester compound (C) represented by the general formula (4) is [1,1'-biphenyl]-4,4'-diylbis[bis(2,4-di -t-butylphenoxy)phosphine] is the fiber-reinforced polycarbonate resin composition according to the present invention (5).

The glass fiber reinforced polycarbonate resin composition of the present invention comprises 20 to 89% by mass of polycarbonate resin (A), 1 to 50% by mass of acrylonitrile-butadiene-styrene resin (B), and 10 to 60% by mass of glass fiber (C). The composition contains 0.01 to 0.2 parts by mass of the phosphoric acid ester compound (D), and has an unnotched Charpy impact strength of 30 kJ/m ^{2 or} more at 23°C according to a test method based on ISO 179. Therefore, it has excellent bending strength, impact strength, heat resistance, and thermal stability.

Hereinafter, the present invention will be described in detail by showing embodiments, examples, etc., but the present invention is not limited to the embodiments, examples, etc. shown below, and within the scope of the invention. It can be implemented with arbitrary changes.

The fiber-reinforced polycarbonate resin composition of the present invention consists of 20 to 89% by mass of polycarbonate resin (A), 1 to 50% by mass of acrylonitrile-butadiene-styrene resin (B), and 10 to 60% by mass of glass fiber (C). Contains 0.01 to 0.2 parts by mass of the phosphoric acid ester compound (D) per 100 parts by mass of the composition, and has an unnotched Charpy impact strength of 30 kJ/m ² or more at 23°C according to a test method based on ISO179. characterized by something.

The polycarbonate resin (A) used in the present invention is obtained by a phosgene method in which various dihydroxydiaryl compounds are reacted with phosgene, or a transesterification method in which a dihydroxydiaryl compound is reacted with a carbonate ester such as diphenyl carbonate. It is a polymer, and a typical example is a polycarbonate resin made from 2,2-bis(4-hydroxyphenyl)propane (commonly known as bisphenol A). The polycarbonate resin (A) may be used alone or in combination of two or more.

In addition to bisphenol A, the dihydroxydiaryl compounds include bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane, 2,2-bis(4-hydroxyphenyl)butane, 2, 2-bis(4-hydroxyphenyl)octane, bis(4-hydroxyphenyl)phenylmethane, 2,2-bis(4-hydroxyphenyl-3-methylphenyl)propane, 1,1-bis(4-hydroxy-3 -tert-butylphenyl)propane, 2,2-bis(4-hydroxy-3-bromophenyl)propane, 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 2,2-bis( Bis(hydroxyaryl)alkanes such as 4-hydroxy-3,5-dichlorophenyl)propane, 1,1-bis(4-hydroxyphenyl)cyclopentane, and 1,1-bis(4-hydroxyphenyl)cyclohexane bis(hydroxyaryl)cycloalkanes, dihydroxydiarylethers such as 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxy-3,3'-dimethyldiphenyl ether, and 4,4'-dihydroxydiphenyl sulfide. dihydroxydiaryl sulfoxides such as 4,4'-dihydroxydiphenyl sulfoxide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfoxide, 4,4'-dihydroxydiphenyl sulfone, 4,4 Dihydroxydiarylsulfones such as '-dihydroxy-3,3'-dimethyldiphenylsulfone are mentioned.

These may be used alone or in combination of two or more, but in addition to these, piperazine, dipiperidyl hydroquinone, resorcinol, 4,4'-dihydroxydiphenyl, etc. may be used in combination.

Furthermore, the dihydroxyaryl compound described above and a phenol compound having a valence of 3 or more as shown below may be used in combination. Examples of trivalent or higher phenols include phloroglucin, 4,6-dimethyl-2,4,6-tri-(4-hydroxyphenyl)-heptene, 2,4,6-dimethyl-2,4,6-tri-(4 -hydroxyphenyl)-heptane, 1,3,5-tri-(4-hydroxyphenyl)-benzole, 1,1,1-tri-(4-hydroxyphenyl)-ethane and 2,2-bis-[4, Examples include 4-(4,4'-dihydroxydiphenyl)-cyclohexyl]-propane. These may be used alone or in combination of two or more.

The viscosity average molecular weight of the polycarbonate resin (A) is not particularly limited, but in terms of moldability and strength, it is usually in the range of 10,000 to 100,000, more preferably 16,000 to 30,000, and still more preferably 19,000 to 26,000. Further, when producing such a polycarbonate resin, a molecular weight regulator, a catalyst, etc. can be used as necessary.

The content of polycarbonate resin (A) is 20 to 89% by mass in 100% by mass of the composition consisting of polycarbonate resin (A), acrylonitrile-butadiene-styrene resin (B), and glass fiber (C), It is preferably 20 to 80% by weight, more preferably 20 to 60% by weight, even more preferably 20 to 45% by weight.

The acrylonitrile-butadiene-styrene resin (ABS resin) (B) used in the present invention may be produced by any polymerization method including bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization. The polymerization method may be single-stage grafting or multi-stage grafting. Alternatively, it may be a mixture of a copolymer containing only a graft component produced as a by-product during production. The ABS resin (B) may be used alone or in combination of two or more. Among these, those obtained by bulk polymerization are preferred because they are superior in bending strength, impact strength, and heat resistance.

The content of acrylonitrile-butadiene-styrene resin (B) is 1 to 50% by mass in 100% by mass of the composition consisting of polycarbonate resin (A), acrylonitrile-butadiene-styrene resin (B), and glass fiber (C). However, it is preferably 5 to 45% by weight, more preferably 10 to 40% by weight, and even more preferably 20 to 35% by weight. Thereby, the effects of the present invention (particularly the effects of improving impact strength and heat resistance) can be more suitably obtained.

The glass fiber (C) used in the present invention is a circular cross-section glass fiber having an average ratio of the major axis to the minor axis (major axis/minor axis) of 1 to 1.5. Alternatively, it may be a flat cross-section glass fiber having an average ratio of the major axis to the minor axis (major axis/minor axis) of 2 to 8. Glass fiber (C) may be used alone or in combination of two or more.

Since the effects of the present invention can be more preferably obtained and the unnotched Charpy impact strength can be more preferably 30 kJ/m ² or more, the glass fiber (C) is used as an epoxy-based sizing agent or a urethane-based sizing agent. In particular, from the viewpoint of heat resistance, it is preferable that the cross-section has a flat cross section with an average value of the ratio of the major axis to the minor axis (major axis/minor axis) of 2 to 8. Such glass fibers (C) are bundled with a binding material such as urethane or epoxy, and have a flat cross section, so they have good adhesion to polycarbonate resin (A) and acrylonitrile-butadiene-styrene resin (B). It is presumed that the results are very good, and that the above-mentioned effects are further exhibited.

When the glass fiber (C) is a flat cross-section glass fiber with an average value of the ratio of the major axis to the minor axis (major axis/minor axis) (cross-sectional aspect ratio) of the fiber cross section of 2 to 8, the average value of the major axis is 10 to 50 μm. is preferable, 15 to 40 μm is more preferable, and even more preferably 25 to 30 μm. Further, the average value of the ratio of the major axis to the minor axis (major axis/minor axis) is 2 to 8, preferably 2 to 7, and more preferably 2.5 to 5. These can be manufactured according to any conventionally known method. In addition, when a glass fiber is formed by converging a plurality of glass filaments, the cross-sectional shape of the glass fiber means the cross-sectional shape of the glass filament forming the glass fiber.

Commercially available flat cross-section glass fibers treated with an epoxy-based sizing agent or urethane-based sizing agent and having a flat cross-section with an average ratio of major axis to minor axis (major axis/minor axis) of 2 to 8 are: Examples include ECS03T-511-FGF and ECS03T-187-FGF manufactured by Nippon Electric Glass Co., Ltd.

Since the effects of the present invention can be more preferably obtained and the unnotched Charpy impact strength can be more preferably 30 kJ/m ² or more, the glass fiber (C) is used as an epoxy-based sizing agent or a urethane-based sizing agent. It is also preferred that the fibers are treated with a circular cross-section and have an average cross-sectional diameter of 6 to 20 μm.

The glass fiber (C) is a circular cross-section glass fiber (preferably a circular cross-section glass fiber whose average value of the ratio of the major axis to the minor axis (major axis/minor axis) (cross-sectional aspect ratio) of the fiber cross section is 1 to 1.5). In this case, the average diameter of the fiber cross section is preferably 6 to 20 μm. When the diameter of the glass fiber is less than 6 μm, the mechanical strength is poor, and when it exceeds 20 μm, the appearance tends to deteriorate. The diameter of the glass fiber is more preferably 7 to 18 μm, even more preferably 8 to 15 μm.

Commercially available circular cross-section glass fibers with an average ratio of major axis to minor axis (major axis/minor axis) of 1 to 1.5 include those with a diameter of 10 μm and those with a diameter of 13 μm. The number average fiber length of these fibers is 2 to 6 mm. Examples of glass fibers available on the market include ECS03T-511/PW manufactured by Nippon Electric Glass Co., Ltd., and the like.

The glass fiber (C) is preferably surface-treated with a silane coupling agent such as aminosilane or epoxysilane in order to further improve its adhesion to the polycarbonate resin. As a result, it is presumed that the glass fiber (C) has better adhesion with the polycarbonate resin (A) and the acrylonitrile-butadiene-styrene resin (B), and the above-mentioned effects are better exhibited.

The number average fiber length of the glass fiber (C) is preferably 1 to 8 mm. These can be manufactured according to any conventionally known method. If the number average fiber length is less than 1 mm, improvements in bending strength and flexural modulus may not be sufficient. Due to poor dispersibility, glass fibers fall off from the resin, resulting in poor productivity.

The content of glass fiber (C) is 10 to 60% by mass in 100% by mass of the composition consisting of polycarbonate resin (A), acrylonitrile-butadiene-styrene resin (B), and glass fiber (C), It is preferably 20 to 60% by weight, more preferably 20 to 50% by weight. Thereby, the effects of the present invention (particularly the effects of improving bending strength, impact strength, and heat resistance) can be more suitably obtained. Moreover, when the content of glass fiber (C) exceeds 60% by mass, there is a possibility that granulation may not be possible.

The glass fiber reinforced polycarbonate resin composition of the present invention contains a phosphoric acid ester compound (D). The phosphoric acid ester compound (D) may be used alone or in combination of two or more. By blending a specific amount of a phosphoric acid ester compound (D), a glass fiber-reinforced polycarbonate resin composition that does not impair the inherent properties of the polycarbonate resin (A), such as mechanical strength, and has excellent thermal stability. You can get things.

The phosphoric acid ester compound (D) is not particularly limited, but includes, for example, compounds represented by the following general formulas (1) to (4). These may be used alone or in combination of two or more. Among them, compounds represented by general formulas (1), (3), and (4) are preferred, and compounds represented by general formulas (3) and (4) are more preferred, and compounds represented by general formula (4) are preferred. More preferred are compounds.

（式中、Ｒ^１は、それぞれ独立して、炭素数１～２０のアルキル基を示し、ａは、０～３の整数を示す） General formula (1):

(In the formula, R ¹ each independently represents an alkyl group having 1 to 20 carbon atoms, and a represents an integer of 0 to 3.)

In the formula (1), R ¹ is an alkyl group having 1 to 20 carbon atoms, and more preferably an alkyl group having 1 to 10 carbon atoms.

Examples of the compound represented by formula (1) include triphenyl phosphite, tricresyl phosphite, tris(2,4-di-t-butylphenyl) phosphite, trisnonylphenyl phosphite, etc. . Among these, tris(2,4-di-t-butylphenyl) phosphite is particularly suitable; for example, it is commercially available as Irgafos 168 manufactured by BASF ("Irgafos" is a registered trademark of BFA Societas Europe) available at.

（式中、Ｒ^２、Ｒ^３、Ｒ^５及びＲ^６は、それぞれ独立して、水素原子、炭素数１～８のアルキル基、炭素数５～８のシクロアルキル基、炭素数６～１２のアルキルシクロアルキル基、炭素数７～１２のアラルキル基又はフェニル基を示す。Ｒ^４は、水素原子又は炭素数１～８のアルキル基を示す。Ｘは、単結合、硫黄原子又は式：－ＣＨＲ^７－（ここで、Ｒ^７は、水素原子、炭素数１～８のアルキル基又は炭素数５～８のシクロアルキル基を示す）で表される基を示す。Ａは、炭素数１～８のアルキレン基又は式：＊－ＣＯＲ^８－（ここで、Ｒ^８は、単結合又は炭素数１～８のアルキレン基を示し、＊は、酸素側の結合手であることを示す）で表される基を示す。Ｙ及びＺは、いずれか一方がヒドロキシル基、炭素数１～８のアルコキシ基又は炭素数７～１２のアラルキルオキシ基を示し、もう一方が水素原子又は炭素数１～８のアルキル基を示す。） General formula (2):

(In the formula, R ² , R ³ , R ⁵ and R ⁶ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, and a cycloalkyl group having 6 to 12 carbon atoms. Represents an alkylcycloalkyl group, an aralkyl group having 7 to 12 carbon atoms, or a phenyl group.R ⁴ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms.X represents a single bond, a sulfur atom, or the formula: -CHR ⁷ - (Here, R ⁷ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms.) A represents a group represented by a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 1 to 8 carbon atoms Alkylene group or formula: *-COR ⁸ - (where R ⁸ represents a single bond or an alkylene group having 1 to 8 carbon atoms, and * represents a bond on the oxygen side) One of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms, or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or a group having 1 to 8 carbon atoms. (Indicates an alkyl group.)

In the general formula (2), R ² , R ³ , R ⁵ and R ⁶ each independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, or a cycloalkyl group having 6 to 8 carbon atoms. -12 alkylcycloalkyl group, aralkyl group having 7 to 12 carbon atoms, or phenyl group.

Here, examples of the alkyl group having 1 to 8 carbon atoms include methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, sec-butyl group, t-butyl group, group, t-pentyl group, i-octyl group, t-octyl group, 2-ethylhexyl group and the like. Examples of the cycloalkyl group having 5 to 8 carbon atoms include cyclopentyl group, cyclohexyl group, cycloheptyl group, and cyclooctyl group. Examples of the alkylcycloalkyl group having 6 to 12 carbon atoms include 1-methylcyclopentyl group, 1-methylcyclohexyl group, and 1-methyl-4-i-propylcyclohexyl group. Examples of the aralkyl group having 7 to 12 carbon atoms include benzyl group, α-methylbenzyl group, α,α-dimethylbenzyl group, and the like.

R ² , R ³ and R ⁵ are preferably each independently an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, or an alkylcycloalkyl group having 6 to 12 carbon atoms. In particular, R ² and R ⁵ are preferably each independently a t-alkyl group such as a t-butyl group, a t-pentyl group, or a t-octyl group, a cyclohexyl group, or a 1-methylcyclohexyl group. In particular, R ³ is a carbon number such as methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, sec-butyl group, t-butyl group, t-pentyl group, etc. It is preferably an alkyl group of 1 to 5, and more preferably a methyl group, t-butyl group or t-pentyl group.

R ⁶ is preferably a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms, and is a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, an i-propyl group, More preferably, it is an alkyl group having 1 to 5 carbon atoms such as n-butyl group, i-butyl group, sec-butyl group, t-butyl group, and t-pentyl group.

In general formula (2), R ⁴ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. Examples of the alkyl group having 1 to 8 carbon atoms include the alkyl groups exemplified in the explanation of R ² , R ³ , R ⁵ and R ⁶ above. In particular, R ⁴ is preferably a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and more preferably a hydrogen atom or a methyl group.

In the general formula (2), X represents a single bond, a sulfur atom, or a group represented by the formula: -CHR ⁷ -. Here, R ⁷ in the formula: -CHR ⁷ - represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms. Examples of the alkyl group having 1 to 8 carbon atoms and the cycloalkyl group having 5 to 8 carbon atoms include the alkyl groups and cycloalkyl groups exemplified in the explanation of R ² , R ³ , R ⁵ and R ⁶ above, respectively. It will be done. In particular, X is a single bond, a methylene group, or a methylene group substituted with a methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, t-butyl, etc. Preferably, it is a single bond, and more preferably a single bond.

In the general formula (2), A represents an alkylene group having 1 to 8 carbon atoms or a group represented by the formula: *-COR ⁸ -. Examples of the alkylene group having 1 to 8 carbon atoms include methylene group, ethylene group, propylene group, butylene group, pentamethylene group, hexamethylene group, octamethylene group, 2,2-dimethyl-1,3-propylene group, etc. are mentioned, preferably a propylene group. Further, R ⁸ in the formula: *-COR ⁸ - represents a single bond or an alkylene group having 1 to 8 carbon atoms. Examples of the alkylene group having 1 to 8 carbon atoms representing R ⁸ include the alkylene groups exemplified in the explanation of A above. R ⁸ is preferably a single bond or an ethylene group. Further, * in the formula: *-COR ⁸ - is a bond on the oxygen side, indicating that the carbonyl group is bonded to the oxygen atom of the phosphite group.

In the general formula (2), one of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms, or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or a carbon number 1 to 12. 8 shows the alkyl group. Examples of the alkoxy group having 1 to 8 carbon atoms include methoxy group, ethoxy group, propoxy group, t-butoxy group, and pentyloxy group. Examples of the aralkyloxy group having 7 to 12 carbon atoms include benzyloxy group, α-methylbenzyloxy group, α,α-dimethylbenzyloxy group, and the like. Examples of the alkyl group having 1 to 8 carbon atoms include the alkyl groups exemplified in the explanation of R ² , R ³ , R ⁵ and R ⁶ above.

Examples of the compound represented by the general formula (2) include 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl-4-hydroxy-5-t-butylphenyl) propoxy]dibenzo[d,f][1,3,2]dioxaphosphepine, 6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy]-2,4,8 , 10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepine, 6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy] -4,8-di-t-butyl-2,10-dimethyl-12H-dibenzo[d,g][1,3,2]dioxaphosphosine, 6-[3-(3,5-di-t -butyl-4-hydroxyphenyl)propionyloxy]-4,8-di-t-butyl-2,10-dimethyl-12H-dibenzo[d,g][1,3,2]dioxaphosphosine, etc. It will be done. Among these, 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl -4-hydroxy-5-t-butylphenyl)propoxy]dibenzo[d,f][1,3,2]dioxaphosphepine is suitable, for example, Sumilizer GP (manufactured by Sumitomo Chemical Co., Ltd.) Sumilizer" is commercially available as a registered trademark).

（式中、Ｒ^９及びＲ^１０は、それぞれ独立して、炭素数１～２０のアルキル基又はアルキル基で置換されていてもよいアリール基を示し、ｂ及びｃは、それぞれ独立して、０～３の整数を示す。） General formula (3):

(In the formula, R ⁹ and R ¹⁰ each independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group optionally substituted with an alkyl group, and b and c each independently represent 0 Indicates an integer between ~3.)

Examples of the compound represented by general formula (3) include 3,9-bis[2,4-bis(α,α-dimethylbenzyl)phenoxy]-2,4,8,10-tetraoxa-3,9 -diphosphaspiro[5,5]undecane), 3,9-bis(2,6-di-tert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5, 5] undecane, etc. 3,9-bis[2,4-bis(α,α-dimethylbenzyl)phenoxy]-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane) is manufactured by Dover Chemical. 3,9-bis(2,6-di-tert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane as Doverphos S-9228 is commercially available as ADEKA STAB PEP-36 (“ADEKA STAB” is a registered trademark) manufactured by ADEKA Corporation.

（一般式（４）において、Ｒ^１１は、それぞれ独立して、炭素数１～２０のアルキル基を示し、ｄは、それぞれ独立して、０～３の整数を示す） General formula (4):

(In general formula (4), R ¹¹ each independently represents an alkyl group having 1 to 20 carbon atoms, and d each independently represents an integer of 0 to 3)

In the formula (4), R ¹¹ is an alkyl group having 1 to 20 carbon atoms, and more preferably an alkyl group having 1 to 10 carbon atoms.

Specific examples of the compound represented by general formula (4) include [1,1'-biphenyl]-4,4'-diylbis[bis(2,4-di-t-butylphenoxy)phosphine], etc. can be mentioned. This is commercially available as Irgafos P-EPQ (trade name) manufactured by BASF and Sandstub P-EPQ (trade name) manufactured by Clariant Japan.

Phosphate ester is added to 100 parts by mass of a composition consisting of 20 to 89% by mass of polycarbonate resin (A), 1 to 50% by mass of acrylonitrile-butadiene-styrene resin (B), and 10 to 60% by mass of glass fiber (C). The content of the system compound (D) is 0.01 to 0.2 parts by mass, preferably 0.02 to 0.15 parts by mass, and more preferably 0.03 to 0.1 parts by mass. Thereby, the effects of the present invention (particularly the effects of improving bending strength, impact strength, and thermal stability) can be more suitably obtained.

Furthermore, to the extent that the effects of the present invention are not impaired, the polycarbonate resin composition of the present invention may contain various resins, antioxidants, optical brighteners, pigments, dyes, carbon black, fillers, and release agents other than the above-mentioned components. Molding agents, ultraviolet absorbers, antistatic agents, rubber, softening agents, spreading agents (liquid paraffin, epoxidized soybean oil, etc.), flame retardants, additives such as organic metal salts, polytetrafluoroethylene resin for preventing dripping, etc. may also be blended. These may be used alone or in combination of two or more.

The fiber-reinforced polycarbonate resin composition of the present invention consists of 20 to 89% by mass of polycarbonate resin (A), 1 to 50% by mass of acrylonitrile-butadiene-styrene resin (B), and 10 to 60% by mass of glass fiber (C). The content of the organic sulfonic acid alkali (earth) metal salt is preferably at most 0.004 parts by mass, more preferably at most 0.001 parts by mass, and even more preferably at most 0 parts by mass, based on 100 parts by mass of the composition. combination).

Examples of the alkali (earth) metal salts of organic sulfonic acids include fluorine-substituted alkyl sulfonic acids such as metal salts of perfluoroalkyl sulfonic acids having 1 to 10 carbon atoms, preferably 2 to 8 carbon atoms, and alkali metals or alkaline earth metals. and metal salts of aromatic sulfonic acids having 7 to 50 carbon atoms, preferably 7 to 40 carbon atoms, and alkali metal or alkaline earth metal salts.

Specific examples of alkali metal perfluoroalkylsulfonates include potassium trifluoromethanesulfonate, potassium perfluorobutanesulfonate, potassium perfluorohexanesulfonate, potassium perfluorooctanesulfonate, sodium pentafluoroethanesulfonate, and perfluorobutanesulfonate. Sodium butanesulfonate, sodium perfluorooctanesulfonate, lithium trifluoromethanesulfonate, lithium perfluorobutanesulfonate, lithium perfluoroheptanesulfonate, cesium trifluoromethanesulfonate, cesium perfluorobutanesulfonate, perfluorooctanesulfonic acid Examples include cesium, cesium perfluorohexanesulfonate, rubidium perfluorobutanesulfonate, and rubidium perfluorohexanesulfonate.

Specific examples of aromatic sulfonic acid alkali (earth) metal salts include, for example, disodium diphenylsulfide-4,4'-disulfonate, dipotassium diphenylsulfide-4,4'-disulfonate, potassium 5-sulfoisophthalate, Sodium 5-sulfoisophthalate, polysodium polyethylene terephthalate polysulfonate, calcium 1-methoxynaphthalene-4-sulfonate, disodium 4-dodecyl phenyl ether disulfonate, polysodium poly(2,6-dimethylphenylene oxide) polysulfonate , polysodium poly(1,3-phenylene oxide) polysulfonate, polysodium poly(1,4-phenylene oxide) polysulfonate, polypotassium poly(2,6-diphenylphenylene oxide) polysulfonate, poly(2-fluoro- 6-Butylphenylene oxide) lithium polysulfonate, potassium benzenesulfonate sulfonate, sodium benzenesulfonate, strontium benzenesulfonate, magnesium benzenesulfonate, dipotassium p-benzenedisulfonate, dipotassium naphthalene-2,6-disulfonate, biphenyl -3,3'-calcium disulfonate, sodium diphenylsulfone-3-sulfonate, potassium diphenylsulfone-3-sulfonate, dipotassium diphenylsulfone-3,3'-disulfonate, diphenylsulfone-3,4'-disulfonic acid Dipotassium, sodium α,α,α-trifluoroacetophenone-4-sulfonate, dipotassium benzophenone-3,3'-disulfonate, disodium thiophene-2,5-disulfonate, dipotassium thiophene-2,5-disulfonate , calcium thiophene-2,5-disulfonate, sodium benzothiophenesulfonate, potassium diphenylsulfoxide-4-sulfonate, formalin condensate of sodium naphthalenesulfonate, and formalin condensate of sodium anthracene sulfonate. .

A molded article (resin molded article) can be produced using the polycarbonate resin composition of the present invention by extrusion molding or injection molding. For extrusion molding, sheet or profile extrusion is performed using an extruder, and for injection molding, a mold capable of molding the molded product and a 100 to 200 Т class injection molding machine are used. The molding temperature is preferably 220°C to 280°C.

The fiber-reinforced polycarbonate resin composition of the present invention has an unnotched Charpy impact strength of 30 kJ/m ² or more at 23° C., preferably 35 kJ/m ² or more, more preferably 37 kJ/m 2 or more, according to a test method based on ISO 179. ² or more, more preferably 40 kJ/m ² or more, particularly preferably 45 kJ/m ² or more. The higher the unnotched Charpy impact strength is, the better it is, so the upper limit is not particularly limited, but is, for example, 60 kJ/m ² . The unnotched Charpy impact strength is measured by the method described in the Examples.

The fiber-reinforced polycarbonate resin composition of the present invention has a deflection temperature under load of preferably 110°C or higher, more preferably 113°C or higher, even more preferably 115°C or higher, particularly preferably 118°C or higher. The higher the deflection temperature under load, the better, so the upper limit is not particularly limited, but is, for example, 140°C. The deflection temperature under load is measured by the method described in the Examples.

The fiber-reinforced polycarbonate resin composition of the present invention has a bending strength at 23°C of preferably 120 MPa or more, more preferably 135 MPa, and even more preferably 150 MPa or more. Since the higher the bending strength, the better the bending strength, the upper limit is not particularly limited, but is, for example, 260 MPa. Bending strength is measured by the method described in Examples.

In order to keep the unnotched Charpy impact strength, deflection temperature under load, and bending strength within the above-mentioned preferred numerical ranges, polycarbonate resin (A), acrylonitrile-butadiene-styrene resin (B), glass fiber (C), and phosphate ester resin are used. Compound (D) may be blended in the above specific amount. In addition, as the glass fiber (C), a glass fiber treated with an epoxy-based sizing agent or a urethane-based sizing agent and having a flat cross section with an average value of the ratio of the major axis to the minor axis (major axis/minor axis) of 2 to 8 may also be used. It is preferable to use ECS03T-511-FGF and ECS03T-187-FGF manufactured by Nippon Electric Glass. Further, as the glass fiber (C), it is also preferable to use a glass fiber treated with an epoxy-based sizing agent or a urethane-based sizing agent and having a circular cross section with an average fiber cross-sectional diameter of 6 to 20 μm. It is also more preferable to use ECS03T-511/PW manufactured by Manufacturer Co., Ltd.

The fiber-reinforced polycarbonate resin composition of the present invention can provide molded articles with excellent bending strength, impact strength, heat resistance, and thermal stability. Therefore, it can be suitably applied to automotive parts and electrical/electronic parts. Among these, it is suitable for thin-walled housings used in electrical and electronic devices such as touch pen housings, tablet housings, mobile phone housings, and smartphone housings, lens barrel parts, camera parts, and automotive interior and exterior parts. can do.

Hereinafter, the present invention will be explained in more detail with reference to Examples. However, the present invention is not limited to the following examples, and can be implemented with arbitrary changes or modifications without departing from the gist of the present invention. In addition, unless otherwise specified, "%" and "parts" in the examples indicate "% by mass" and "parts by mass", respectively, based on a mass standard.

Details of the raw materials used are as follows.
1. Polycarbonate resin (A):
1-1. Polycarbonate resin synthesized from bisphenol A and phosgene (SD Polycarbonate 200-20, manufactured by Sumika Polycarbonate Co., Ltd., viscosity average molecular weight 19,000, hereinafter abbreviated as "PC-1")

2. Acrylonitrile-butadiene-styrene resin (ABS resin) (B):
2-1. ABS resin (Suntac AT-05, manufactured by Japan A&L Co., Ltd., bulk polymer product, hereinafter abbreviated as "ABS-1")
2-2. ABS resin (Clarastic SXH-330, manufactured by Japan A&L Co., Ltd., emulsion polymer product, hereinafter abbreviated as "ABS-2")
2-3. ABS resin (MAGNUM A-156 manufactured by TRINSEO, bulk polymer product, hereinafter abbreviated as "ABS-3")

3. Glass fiber (C):
3-1. Flat cross-section glass fiber (Nippon Electric Glass Co., Ltd. E glass fiber, ECS03T-511-FGF,
Cross-sectional aspect ratio: 3.5, fiber length 3 ± 1 mm, urethane sizing agent,
(hereinafter abbreviated as “GF-1”)
3-2. Flat cross-section glass fiber (Nippon Electric Glass Co., Ltd. E glass fiber, ECS03T-187-FGF,
Cross-sectional aspect ratio: 3.5, fiber length 3 ± 1 mm, epoxy sizing agent,
(hereinafter abbreviated as “GF-2”)
3-3. Circular cross-section glass fiber (E glass fiber manufactured by Nippon Electric Glass Co., Ltd., ECS03T-511/PW,
Number average fiber length 3mm, urethane sizing agent, hereinafter abbreviated as "GF-3")
3-4. Circular cross section glass fiber (KCC E glass fiber, CS311-13, fiber diameter 13μm,
Number average fiber length 3mm, urethane sizing agent, hereinafter abbreviated as "GF-4")
3-5. Circular cross-section glass fiber (Nittobo Co., Ltd. E glass fiber, 455S, fiber diameter 13 μm,
Number average fiber length 3mm, urethane sizing agent, hereinafter abbreviated as "GF-5")

［ＢＡＳＦ社製のイルガフォスＰ－ＥＰＱ（商品名）、以下「Ｄ－１」と略記］ 4. Phosphoric ester compound (D):
4-1. [1,1'-biphenyl]-4,4'-diylbis[bis(2,4-di-t-butylphenoxy)phosphine], represented by the following formula:

[Irgafos P-EPQ (product name) manufactured by BASF, hereinafter abbreviated as "D-1"]

［住友化学（株）製のスミライザーＧＰ（商品名）、以下「Ｄ－２」と略記］ 4-2. 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl-4-hydroxy-5-t-butylphenyl)propoxy]dibenzo[d,f ] [1,3,2] Dioxaphosphepine

[Sumilizer GP (product name) manufactured by Sumitomo Chemical Co., Ltd., hereinafter abbreviated as "D-2"]

［ＡＤＥＫＡ製のアデカスタブＰＥＰ－３６（商品名）、以下「Ｄ－３」と略記］ 4-3. Bis(2,4-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite (IUPAC name: 3,9-bis(2,6-di-tert-butyl- (4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane)

[ADEKA STAB PEP-36 (product name), hereinafter abbreviated as "D-3"]

［ＢＡＳＦ社製のイルガフォス１６８（商品名）、以下「Ｄ－４」と略記］ 4-4. Tris(2,4-di-t-butylphenyl)phosphite, represented by the following formula:

[Irgafos 168 (product name) manufactured by BASF, hereinafter abbreviated as "D-4"]

［Ｄｏｖｅｒ Ｃｈｅｍｉｃａｌ社製のＤｏｖｅｒｐｈｏｓ Ｓ－９２２８（商品名）、以下「Ｄ－５」と略記］ 4-5. Bis(2,4-dicumylphenyl)pentaerythritol diphosphite (IUPAC name: 3,9-bis[2,4-bis(α,α-dimethylbenzyl)phenoxy]-2) represented by the following formula: , 4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane)

[Doverphos S-9228 (product name) manufactured by Dover Chemical, hereinafter abbreviated as "D-5"]

Examples and Comparative Examples The various blending components described above were kneaded at the blending ratios shown in Tables 1 and 2 using a twin-screw extruder (TEM-37SS manufactured by Toshiba Machinery Co., Ltd.) at a melting temperature of 260°C to form glass fibers. A reinforced polycarbonate resin composition was obtained. Specifically, components other than glass fibers are fed into the extruder barrel from a first feeder (raw material supply port), and after the resin composition is sufficiently melted, glass fibers are fed from a second feeder (filler supply port). fed into the extruder barrel.

The following evaluations were performed using the obtained glass fiber reinforced polycarbonate resin composition. The results are shown in Tables 1 and 2.

<Bending test>
The obtained pellets of the various resin compositions were each dried at 100°C for 4 hours, and then molded using an injection molding machine (ROBOSHOT α-S100iA manufactured by Fanuc Corporation) at a set temperature of 260°C according to the ISO test method. A dumbbell-shaped molded product with a thickness of 4 mm was produced, and a test piece with a length of 80 mm, a width of 10 mm, and a thickness of 4 mm was produced using a notch processing machine (No. 189-PNCA manufactured by Yasuda Seiki Co., Ltd.). The bending strength of the obtained test piece at 23° C. was measured according to ISO 178 using a Tensilon universal material testing machine (Tensilon RTG-1310 manufactured by A&D Co., Ltd.). It was judged that the bending strength was good when it was 120 MPa or more.

<Charpy impact strength>
The obtained pellets of the various resin compositions were each dried at 100°C for 4 hours, and then molded using an injection molding machine (ROBOSHOT α-S100iA manufactured by Fanuc Corporation) at a set temperature of 260°C according to the ISO test method. A dumbbell-shaped molded product with a thickness of 4 mm was produced, and a test piece with a length of 80 mm, a width of 10 mm, and a thickness of 4 mm was produced using a notch processing machine (No. 189-PNCA manufactured by Yasuda Seiki Co., Ltd.). The Charpy impact strength of the obtained test piece at 23°C was measured using a Charpy impact tester (digital impact tester manufactured by Toyo Seiki Co., Ltd.) according to ISO 179-1.
The unnotched Charpy impact strength was judged as △ if it was 30 kJ/m ² or more and less than 35 kJ/m ² , ○ if it was 35 kJ/m ² or more and less than 37 kJ/m ² , and ◎ if it was 37 kJ/m ² or more.

<Load deflection temperature>
The obtained pellets of the various resin compositions were each dried at 100°C for 4 hours, and then molded using an injection molding machine (ROBOSHOT α-S100iA manufactured by Fanuc Corporation) at a set temperature of 260°C according to the ISO test method. A dumbbell-shaped molded product with a thickness of 4 mm was produced, and a test piece with a length of 80 mm, a width of 10 mm, and a thickness of 4 mm was produced using a notch processing machine (No. 189-PNCA manufactured by Yasuda Seiki Co., Ltd.). The load deflection temperature of the obtained test piece was measured using an HDT test device (HDT test device manufactured by Toyo Seiki Co., Ltd.) in accordance with ISO75-2. The bending stress applied to the test piece was 1.8 MPa. It was judged that the heat resistance was excellent when the deflection temperature under load was 110°C or higher.

<Thermal stability>
The obtained pellets of various resin compositions were pre-dried at 100°C for 4 hours, and then molded at a molding temperature of 260°C using an injection molding machine (ROBOSHOT S2000i100B manufactured by Fanuc Corporation). After preparing flat test pieces (length 80 mm, width 50 mm, thickness 2 mm) before and after residence for 5 minutes, the change in YI (ΔYI) was measured using a spectrophotometer (CMS-35SP manufactured by Murakami Color Research Institute). ΔYI represents the difference in the degree of yellowness before and after residence; the smaller ΔYI is, the less discoloration occurs and the thermal stability is excellent. In addition, when ΔYI was less than 2.0, it was judged as ○, and when it was 2.0 or more, it was judged as ×.

As shown in Table 1, the polycarbonate resin compositions of Examples 1 to 17 were able to produce molded articles with excellent bending strength, impact strength, heat resistance, and thermal stability. On the other hand, with the polycarbonate resin compositions of Comparative Examples 1 to 8, only molded articles could be produced that were inferior in bending strength, impact strength, heat resistance, or thermal stability.

The glass fiber reinforced polycarbonate resin composition of the present invention has excellent bending strength, impact strength, heat resistance, and thermal stability, and therefore has high industrial utility value. For example, it can be suitably applied to in-vehicle components and electrical/electronic components. Among these, it can be suitably applied to thin-walled casings, lens barrel parts, and camera members used in electrical and electronic devices such as touch pen casings, tablet casings, mobile casings, and smartphone casings.

Claims (10)

Phosphate ester is added to 100 parts by mass of a composition consisting of 20 to 89% by mass of polycarbonate resin (A), 1 to 50% by mass of acrylonitrile-butadiene-styrene resin (B), and 10 to 60% by mass of glass fiber (C). A fiber-reinforced polycarbonate resin containing 0.01 to 0.2 parts by mass of the system compound (D) and having an unnotched Charpy impact strength of 30 kJ/m ² or more at 23°C according to a test method based on ISO 179. Composition. The fiber-reinforced polycarbonate resin composition according to claim 1, wherein the polycarbonate resin (A) has a viscosity average molecular weight of 16,000 to 30,000. According to claim 2, the glass fiber (C) is treated with an epoxy-based sizing agent or a urethane-based sizing agent and has a flat cross section with an average value of the ratio of the major axis to the minor axis (major axis/minor axis) of 2 to 8. fiber-reinforced polycarbonate resin composition. The fiber-reinforced polycarbonate resin composition according to claim 2, wherein the glass fiber (C) is treated with an epoxy-based sizing agent or a urethane-based sizing agent and has a circular cross section with an average diameter of 6 to 20 μm. The phosphoric acid ester compound (D) is one selected from compounds represented by the following general formula (1), the following general formula (2), the following general formula (3), and the following general formula (4). The fiber-reinforced polycarbonate resin composition according to claim 3, which is the above compound.
General formula (1):

(In general formula (1), R ¹ each independently represents an alkyl group having 1 to 20 carbon atoms, and a represents an integer of 0 to 3)
General formula (2):

(In general formula (2), R ² , R ³ , R ⁵ and R ⁶ each independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, and a cycloalkyl group having 5 to 8 carbon atoms. It represents an alkylcycloalkyl group having 6 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, or a phenyl group. R ⁴ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. X represents a single bond, a sulfur atom, or Formula: -CHR ⁷ - (where R ⁷ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms). A is a carbon Alkylene group of numbers 1 to 8 or formula: *-COR ⁸ - (where R ⁸ represents a single bond or an alkylene group having 1 to 8 carbon atoms, and * represents a bond on the oxygen side ).One of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms, or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or a carbon number (Indicates an alkyl group of 1 to 8.)
General formula (3):

(In general formula (3), R ⁹ and R ¹⁰ each independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group optionally substituted with an alkyl group, and b and c each independently (indicates an integer from 0 to 3.)
General formula (4):

(In general formula (4), R ¹¹ each independently represents an alkyl group having 1 to 20 carbon atoms, and d each independently represents an integer of 0 to 3) The fiber-reinforced polycarbonate resin composition according to claim 5, wherein the phosphite compound (C) represented by the general formula (1) is tris (2,4-di-t-butylphenyl) phosphite. thing. The phosphite compound (C) represented by the general formula (2) is 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl-4-hydroxy-5 The fiber-reinforced polycarbonate resin composition according to claim 5, which is -t-butylphenyl)propoxy]dibenzo[d,f][1,3,2]dioxaphosphepine. The phosphite compound (C) represented by the general formula (3) is 3,9-bis[2,4-bis(α,α-dimethylbenzyl)phenoxy]-2,4,8,10 -tetraoxa-3,9-diphosphaspiro[5,5]undecane) and 3,9-bis(2,6-di-tert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3, The fiber-reinforced polycarbonate resin composition according to claim 5, which is one or more compounds selected from 9-diphosphaspiro[5,5]undecane. The phosphoric acid ester compound (C) represented by the general formula (4) is [1,1'-biphenyl-4,4'-diyl]bis[bis(2,4-di-t-butylphenoxy)] 6. The fiber-reinforced polycarbonate resin composition according to claim 5, which is phosphine]. A resin molded article comprising the fiber-reinforced polycarbonate resin composition according to any one of claims 1 to 9.